Wireless Notebook Optical Mouse 4000 includes a compact receiver that snaps into the mouse when not in use, saving battery life. The new Magnifier lets you enlarge and edit detail, and the innovative Tilt Wheel enables four-way scrolling. Plug in the compact receiver when you're ready to work, then snap it into your mouse when you travel, saving hassle and battery life. Easily enlarge and edit details with the new Magnifier and scroll four ways with the innovative 4-Way Scrolling.

High Definition Laser technology - Microsoft High Definition Laser mouse products deliver tighter precision, greater responsiveness, and smoother tracking

Magnifier - Point and click to enlarge and edit detail

Tilt Wheel Technology - Experience unrivaled accuracy, speed, and control-new wheel functionality and intuitive software enables enhanced, accelerated scrolling through documents and Web pages. Depress the wheel to toggle between open windows, making mult

Snap-in Receiver - A small receiver snaps into the bottom of the mouse when not in use. When the reciever is snapped in, the mouse turns off, conserving battery life

Six times the battery life - Work longer without interruption. New optical technology helps extend battery life to as much as six times that of competing products.